Home / 20,649.30-30,975.13-5,857.05

Finding the Fourth Proportional to 20,649.30, 30,975.13 and 5,857.05

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Solution

The fourth proportional to 20,649.30, 30,975.13 and 5,857.05 is: 8,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.30 : 30,975.13 = 5,857.05 : x
  2. Step 2: Convert to fraction form
    20,649.30/30,975.13 = 5,857.05/x
  3. Step 3: Cross multiply
    20,649.30x = 30,975.13 × 5,857.05
  4. Step 4: Simplify right side
    20,649.30x = 181,422,986.68
  5. Step 5: Solve for x
    x = 181,422,986.68/20,649.30
  6. Step 6: Final answer
    x = 8,785.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.